There are a couple of stipulations before you can join their new program you need to be a customer of T-Mobile and have at least 22 months worth of calls and all bills paid.  If you have this you can take advantage of the T-Mobile $50 unlimited calling plan for anywhere in the US.

They have also introduced a loyalty Unlimited cell phone plan without any contract extensions or any other commitments you will be able to transfer over to this plan and begin saving money straight away.

If you are already a customer a new ad alliance and poor of a new customer from a competitor T-Mobile are going to pay you $135 credit on your bill. I’m sure this new deal was cut to be one of the best cell phone plans on the market and should really get the competition moving because of the unlimited use that T-Mobile are offering.